<template>
  <div class="login-container">
    <el-form
      ref="refLoginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      autocomplete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">Login Form</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon name="user" />
        </span>
        <el-input
          ref="refUsername"
          v-model="loginForm.username"
          placeholder="Username"
          name="username"
          type="text"
          tabindex="1"
          autocomplete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon name="password" />
        </span>
        <el-input
          ref="refPassword"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          autocomplete="on"
          @keyup.enter="handleLogin"
        />
        <span class="show-pwd" @click="showPwd()">
          <svg-icon :name="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        size="large"
        style="width: 100%; margin-bottom: 30px"
        @click.prevent="handleLogin"
        >Login</el-button
      >
      <div class="tips">
        <span>Username : admin</span>
        <span>Password : any</span>
      </div>
      <div class="tips">
        <span style="margin-right: 18px">Username : editor</span>
        <span>Password : any</span>
      </div>
    </el-form>
  </div>
</template>

<script setup>
import { nextTick, onMounted, reactive, toRefs } from 'vue'
import { useUserStore } from '@/store/user'
import { useRouter, useRoute } from 'vue-router'

const router = useRouter()
const route = useRoute()

const validateUsername = (rule, value, callback) => {
  if (!value) {
    callback(new Error('Please enter the correct user name'))
  } else {
    callback()
  }
}

const validatePassword = (rule, value, callback) => {
  if (value.length < 6) {
    callback(new Error('The password can not be less than 6 digits'))
  } else {
    callback()
  }
}

const state = reactive({
  refLoginForm: null,
  refUsername: null,
  refPassword: null,
  loginForm: {
    username: 'admin',
    password: '123456789'
  },
  loginRules: {
    username: [
      { required: true, trigger: 'blur', validator: validateUsername }
    ],
    password: [{ required: true, trigger: 'blur', validator: validatePassword }]
  },
  passwordType: 'password',
  loading: false,
  showDialog: false,
  redirect: undefined,
  otherQuery: {}
})

const {
  refLoginForm,
  refUsername,
  refPassword,
  loginForm,
  loginRules,
  passwordType,
  loading
} = toRefs(state)

const getOtherQuery = (query) => {
  return Object.keys(query).reduce((acc, cur) => {
    if (cur !== 'redirect') {
      acc[cur] = query[cur]
    }
    return acc
  }, {})
}

const showPwd = () => {
  if (state.passwordType === 'password') {
    state.passwordType = ''
  } else {
    state.passwordType = 'password'
  }
  nextTick(() => {
    state.refPassword.focus()
  })
}

const handleLogin = () => {
   state.refLoginForm.validate(async (valid) => {
    if (valid) {
      state.loading = true
      const userStore = useUserStore()
      await userStore.login(state.loginForm)
      state.loading = false
      router.push({ path: state.redirect || '/', query: state.otherQuery })
    } else {
      console.log('error submit!!')
      return false
    }
  })
}

onMounted(() => {
  const { query } = route
  if (state.loginForm.username === '') {
    state.refUsername.focus()
  } else if (state.loginForm.password === '') {
    state.refPassword.focus()
  }
  if (query) {
    state.redirect = query.redirect
    state.otherQuery = getOtherQuery(query)
  }
})
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    flex: 1;
    display: inline-block;
    height: 47px;

    .el-input__wrapper {
      width: 100%;
      padding: 0;
      background-color: transparent;
      box-shadow: none;

      input {
        background: transparent;
        border: 0px;
        appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;

        &:-webkit-autofill {
          box-shadow: 0 0 0px 1000px $bg inset !important;
          -webkit-text-fill-color: $cursor !important;
        }
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    box-sizing: border-box;
    margin: 0 auto;
    overflow: hidden;
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }
}
</style>
